李清泉;王新海;尹虎;任飞;王珊珊;张磊;

• 1:中国石油大学石油工程教育部重点实验室

• 2:长江大学油气资源与勘探技术教育部重点实验室

• 3:塔里木油田公司

摘要(Abstract)：

为研究页岩气藏生产过程中井底压力动态及影响因素,基于质量守恒定律,考虑解吸和压力敏感系数,建立页岩气藏双孔双渗数学模型,对数学模型差分离散得到数值模型并求解;分析解吸、兰氏体积、兰氏压力、吸附时间、压力敏感系数等对井底压力双对数曲线的影响.结果表明:吸附气解吸使压降速率变缓且较晚触到边界;兰氏体积或兰氏压力越大,井底压力双对数曲线的下凹部分越明显;吸附时间常数越短,扩散效果越好,越容易达到整体径向流段;压力敏感系数越大,双对数曲线上翘越明显.该研究结果对页岩气藏开发具有指导意义.

关键词(KeyWords)：页岩气;双孔双渗;解吸;应力敏感;井底压力

Abstract:

Keywords:

基金项目(Foundation):国家油气重大专项(2011zx05015);; 中国石油天然气集团公司项目(2011A3604)

作者(Author):李清泉;王新海;尹虎;任飞;王珊珊;张磊;

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